JP2012182080A - Lead acid battery - Google Patents
Lead acid battery Download PDFInfo
- Publication number
- JP2012182080A JP2012182080A JP2011045522A JP2011045522A JP2012182080A JP 2012182080 A JP2012182080 A JP 2012182080A JP 2011045522 A JP2011045522 A JP 2011045522A JP 2011045522 A JP2011045522 A JP 2011045522A JP 2012182080 A JP2012182080 A JP 2012182080A
- Authority
- JP
- Japan
- Prior art keywords
- battery case
- rib
- electrode plate
- battery
- lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
本発明は、鉛蓄電池、特に自動車用の鉛蓄電池に関する。 The present invention relates to a lead acid battery, particularly a lead acid battery for automobiles.
鉛蓄電池には、大電流放電が可能であり、生産性に優れたペースト式極板が多く使用されている。ペースト式極板は、鉛合金製格子体にペースト状活物質を保持させた極板である。自動車用等の鉛蓄電池においては、生産性向上の観点から、鉛合金製平板に切り込みを入れて伸張させたエキスパンド格子体にペースト状活物質を保持させた極板が多く使用されるようになっている。
自動車用の鉛蓄電池はエンジンルームに搭載されるため、特に真夏は、ボンネットやエンジンなどからの輻射熱により、高温環境下にさらされる。極板の格子体は、高温で使用されると腐食が進行する。鋳造格子体がその左右両側部に枠骨を有しているのに対し、エキスパンド格子体は当該枠骨を有していないため、前記腐食に起因する上下方向への膨張が大きい。一方、極板は、下辺を電槽底部に当接し、上辺上の集電部としての耳部をストラップに溶接して、上下方向の寸法を規制されている。従って、鉛蓄電池の継続使用により、エキスパンド格子体の上下方向への膨張が徐々に大きくなり、エキスパンド格子体が変形すると、耳部の付け根部分に応力が集中するようになる。すると、前記耳部の付け根部分にて、耳部の折れ、又は、破断する可能性が徐々に増す。
For lead-acid batteries, large current discharge is possible, and many paste type electrode plates with excellent productivity are used. The paste-type electrode plate is an electrode plate in which a paste-like active material is held on a lead alloy lattice. In lead storage batteries for automobiles and the like, from the viewpoint of improving productivity, an electrode plate in which a paste-like active material is held on an expanded lattice body obtained by cutting and stretching a lead alloy flat plate has come to be used. ing.
Since lead-acid batteries for automobiles are mounted in the engine room, they are exposed to high temperature environments due to radiant heat from bonnets, engines, etc., especially in midsummer. Corrosion of the grid of electrode plates proceeds when used at high temperatures. While the cast lattice has frame bones on both the left and right sides thereof, the expanded lattice body does not have the frame bones, and therefore, the expansion in the vertical direction due to the corrosion is large. On the other hand, the upper and lower dimensions of the electrode plate are regulated by abutting the lower side against the bottom of the battery case and welding the ear part as the current collector on the upper side to the strap. Therefore, the expansion of the expanded lattice body in the vertical direction is gradually increased by continuous use of the lead storage battery, and when the expanded lattice body is deformed, stress is concentrated on the base portion of the ear portion. Then, the possibility that the ear part is broken or broken at the base part of the ear part gradually increases.
このような、エキスパンド格子体における耳部付け根部分への応力集中への対応策は、例えば特許文献1に示されおり、電槽底部に配置する鞍の、極板群を載置する一部を切り欠く、細くすることにより部分的に強度を弱くし、鞍の変形により応力を分散させている。 Such countermeasures to stress concentration at the base of the ear part in the expanded lattice body are shown in, for example, Patent Document 1, and a part of the electrode plate group of the bag placed at the bottom of the battery case is placed. The strength is partially weakened by cutting and thinning, and the stress is dispersed by deformation of the heel.
しかしながら、特許文献1に記載された鞍は、電池の鉄製収納箱に、電解液(希硫酸)が付着した場合、鉄製収納箱側面が腐食し、錆の発生による体積変化により電池の側面を押された場合の変形を吸収する方向に、切り込みまたは薄肉部を配置しているため、極板自身の上下方向の伸びの変形量を吸収する形状として、適しているとはいえない。
本発明は、エキスパンド格子体の上下方向の伸びにより発生した応力を、耳の付け根部分に集中させない鉛蓄電池を提供することを目的とする。
However, when the electrolyte (dilute sulfuric acid) adheres to the iron storage box of the battery, the bag described in Patent Document 1 corrodes the side surface of the iron storage box and pushes the side surface of the battery due to the volume change due to the generation of rust. Since the notch or the thin portion is arranged in the direction of absorbing the deformation when it is applied, it cannot be said that it is suitable as a shape that absorbs the deformation amount of the vertical extension of the electrode plate itself.
An object of the present invention is to provide a lead-acid battery that does not concentrate the stress generated by the vertical expansion of the expanded lattice at the base of the ear.
上記課題を解決するために本発明に係る第1の発明は、電槽と、この電槽底面に設けたリブと当接するように配置されるエキスパンド格子体の極板とを備え、前記格子体がその上辺に集電部としての耳部を有し、前記電槽底面に設けたリブが、耳部を変形させるに足る応力よりも小さい応力で凹変形するように構成された鉛蓄電池であることを特徴とする。 In order to solve the above-mentioned problem, a first invention according to the present invention includes a battery case and an electrode plate of an expanded lattice body disposed so as to abut against a rib provided on the bottom surface of the battery case. Is a lead-acid battery that has an ear portion as a current collector on its upper side, and the rib provided on the bottom of the battery case is concavely deformed with a stress smaller than a stress sufficient to deform the ear portion. It is characterized by that.
第2の発明は、前記第1の発明において、リブが、電槽底面よりも変形し易い材質により構成されることを特徴とする。 The second invention is characterized in that, in the first invention, the rib is made of a material that is more easily deformed than the bottom of the battery case.
第3の発明は、前記第1又は第2の発明において、リブが、リブ本体と、このリブ本体に固定された軟質で弾力性を有する材料とで構成されることを特徴とする。 According to a third invention, in the first or second invention, the rib is composed of a rib body and a soft and elastic material fixed to the rib body.
第4の発明は、前記第3の発明において、軟質で弾力性を有する材料が、ブチルゴム又はエチレンプロピレンゴムであることを特徴とする。 According to a fourth aspect, in the third aspect, the soft and elastic material is butyl rubber or ethylene propylene rubber.
本発明によれば、エキスパンド格子体の伸びを、耳部が変形するよりも前に、電槽底部に設けたリブが凹変形することにより吸収し、耳部を変形させることがない。 According to the present invention, the expansion of the expanded lattice body is absorbed by the concave deformation of the rib provided on the bottom of the battery case before the ear is deformed, and the ear is not deformed.
リブが電槽底面よりも変形し易い材質により構成される場合は、リブの変形により耳部への応力集中を阻止すると共に、電槽底面をより硬質なものとすることができ、外部衝撃に対しより強固な鉛蓄電池とすることができる。 If the rib is made of a material that is more easily deformed than the battery case bottom, the rib deformation prevents stress concentration on the ears, and the battery case bottom can be made harder to prevent external shock. On the other hand, a stronger lead-acid battery can be obtained.
リブをリブ本体と軟質で弾力性を有する材料により構成した場合は、電槽底面とリブ本体とを共に硬質な材料により一体成形することができ、しかも、極板の底辺を軟質で弾力性を有する材料に当接するように配置して、軟質で弾力性を有する材料により耳部への応力集中を阻止することができる。また、軟質で弾力性を有する材料をブチルゴム又はエチレンプロピレンゴムとした場合は、エンジンの熱で温度の上がった電解液(希硫酸)中で使用されても、弾力性を保つことができる。 When the rib is made of a soft and elastic material with the rib main body, the bottom of the battery case and the rib main body can be integrally formed of a hard material, and the bottom of the electrode plate is soft and elastic. It can arrange | position so that it may contact | abut to the material which it has, and it can prevent the stress concentration to an ear | edge part with the material which is soft and elastic. Further, when the soft and elastic material is butyl rubber or ethylene propylene rubber, the elasticity can be maintained even when used in an electrolytic solution (dilute sulfuric acid) whose temperature has been increased by engine heat.
<電槽>
本発明にて述べる電槽は、その内部に、正極板と負極板とその両者の間に介在させたセパレータにより構成した極板群を収納するものであり、極板群の収納し易さから、上面が開放された箱体と、この箱体の上面を覆う蓋体とを有するものを、好適に使用することができる。尚、箱体と蓋体との一体化は、接着剤、熱溶着、超音波溶着等を適宜用いることができる。
電槽の形状は、特に限定されるものではないが、通常極板群がほぼ直方体であることから、電極収納時に無効空間が少なくなるように、方形のものを用いることが好ましい。
電槽の材質は、特に制限されるものではないが、電解液(希硫酸)に対し耐性を有するものである必要があり、具体的には、ポリプロピレン、ポリエチレン、アクリロニトリル・ブタジエン・スチレン共重合樹脂(ABS)等を用いることができ、ポリプロピレンであると、耐酸性、加工性(ABSでは電槽と蓋の熱溶着が困難)、コストの面で有利である。
<Battery>
The battery case described in the present invention accommodates a positive electrode plate, a negative electrode plate, and an electrode plate group constituted by a separator interposed between the two, and is easy to store the electrode plate group. A thing having a box body whose upper surface is opened and a lid body covering the upper surface of the box body can be suitably used. For the integration of the box and the lid, an adhesive, heat welding, ultrasonic welding, or the like can be used as appropriate.
The shape of the battery case is not particularly limited. However, since the electrode plate group is generally a rectangular parallelepiped, it is preferable to use a rectangular one so that the ineffective space is reduced when the electrodes are housed.
The material of the battery case is not particularly limited, but it must be resistant to the electrolytic solution (dilute sulfuric acid). Specifically, polypropylene, polyethylene, acrylonitrile-butadiene-styrene copolymer resin (ABS) or the like can be used. Polypropylene is advantageous in terms of acid resistance, workability (it is difficult to heat weld the battery case and the lid with ABS), and cost.
尚、電槽は、前述した箱体及び蓋体より形成される場合に、箱体と蓋体とを、別々の材質により形成しても、同一材質により形成してもよいが、熱膨張係数の等しいものを使用することが、無理な応力が発生させず好ましい。
電槽には、必要に応じて、安全弁を設けることがでる。制御弁式鉛蓄電池においては、何らかの不具合等により過大な充電電流が流れた場合、発生したガスによる内圧を大気中へ放出させるための安全弁が設けられている。
In addition, when the battery case is formed of the box body and the lid body described above, the box body and the lid body may be formed of different materials or the same material. It is preferable to use those having the same because no excessive stress is generated.
If necessary, the battery case can be provided with a safety valve. In a control valve type lead-acid battery, when an excessive charging current flows due to some trouble or the like, a safety valve is provided for releasing the internal pressure of the generated gas into the atmosphere.
<エキスパンド格子体を使用した極板>
本発明にて述べる極板は、エキスパンド格子体を使用した極板を用いる。
先ず、所定合金組成になるように鉛中に所定量のCa、Snを溶解する。前記鉛合金を金型で鋳造することで、正極用鋳造スラブを作製する。
前記正極用鋳造スラブを、例えば、厚さが1.0mmになるまで連続的に圧延加工を行い、厚さ:1.0mm、幅:78mmとなる圧延シートを作製する。
また、負極用については、例えば、同様の工程にて厚さ:0.6mm、幅:55mmとなる圧延シートを作製する。
<Plate using expanded grid>
As the electrode plate described in the present invention, an electrode plate using an expanded lattice is used.
First, a predetermined amount of Ca and Sn is dissolved in lead so as to have a predetermined alloy composition. A cast slab for positive electrode is produced by casting the lead alloy with a mold.
For example, the casting slab for positive electrode is continuously rolled until the thickness becomes 1.0 mm to produce a rolled sheet having a thickness of 1.0 mm and a width of 78 mm.
For the negative electrode, for example, a rolled sheet having a thickness of 0.6 mm and a width of 55 mm is produced in the same process.
次に、圧延シートの幅方向中央部を除く左右両側領域に圧延シート長手方向のスリットを千鳥状に順次入れ、圧延シートの幅方向に展開加工を行い、網目状の格子を形成する。これを所定寸法に裁断すると共に、圧延シートの非展開部から集電部としての耳部を打ち抜くことでエキスパンド格子体を得られる。 Next, slits in the longitudinal direction of the rolled sheet are sequentially put in a staggered manner in both the left and right regions excluding the central portion in the width direction of the rolled sheet, and developed in the width direction of the rolled sheet to form a mesh-like lattice. An expanded lattice body can be obtained by cutting this into a predetermined dimension and punching out the ears as the current collector from the non-deployed portion of the rolled sheet.
このエキスパンド格子体には、鉛粉、所要の添加剤、希硫酸及び水を練合したペースト状活物質を充填し、熟成、乾燥を経て、正極板及び負極板を作製する。 This expanded lattice is filled with a paste-like active material kneaded with lead powder, required additives, dilute sulfuric acid and water, and is subjected to aging and drying to produce a positive electrode plate and a negative electrode plate.
<電池の作製>
前記正極板と負極板とを、セパレータを介して交互に積層し、正極6枚/負極7枚構成の極板群を作製する。この極板群を電槽に挿入し、正極板の耳部と負極板の耳部を各々溶接し、蓋を電槽にかぶせて溶着し、電池を組み立てた。
前記電池に希硫酸を注液し、40℃の水槽内に静置した。次に、直流電流を通電して電槽化成した。電槽化成後の電池の電解液比重を1.280(20℃換算)に調整し、電池を作製した。
<Production of battery>
The positive electrode plate and the negative electrode plate are alternately laminated via a separator to produce an electrode plate group having a structure of 6 positive electrodes / 7 negative electrodes. The electrode plate group was inserted into the battery case, the ears of the positive electrode plate and the ears of the negative electrode plate were welded, and the lid was placed on the battery case and welded to assemble the battery.
Dilute sulfuric acid was poured into the battery and left in a 40 ° C. water tank. Next, a direct current was applied to form a battery case. The battery was prepared by adjusting the electrolyte specific gravity of the battery after battery case formation to 1.280 (20 ° C. conversion).
<凹変形>
本発明にて述べるリブの凹変形とは、電槽底面に設けたリブが、下方に凹むことを意味する。より詳細には、リブそのものが下側に凹むか、リブがリブ本体とこのリブ本体に固定された弾性体とを有し、この弾性体が下側に凹むことを意味する。
但し、凹むのは、耳部を変形させるに足る応力よりも大きい応力が、エキスパンド格子体の耳部に対して発生した場合であり、その際に、耳部が変形するよりも前に、電槽底面に設けたリブが凹変形して、耳部の変形を阻止する。
凹変形の量は、特に限定されるものではなく、エキスパンド格子体の上下方向長さによるが、大凡その上下方向の長さの1〜3%程度であり、格子体の上下方向長さが100mmであれば、1〜3mmとすることができる。
<Concave deformation>
The concave deformation of the rib described in the present invention means that the rib provided on the battery case bottom is recessed downward. More specifically, it means that the rib itself is recessed downward, or the rib has a rib main body and an elastic body fixed to the rib main body, and the elastic body is recessed downward.
However, the concave portion is a case where a stress larger than a stress sufficient to deform the ear portion is generated on the ear portion of the expanded lattice, and in this case, the electric power is changed before the ear portion is deformed. The rib provided on the bottom of the tank is concavely deformed to prevent the ear from being deformed.
The amount of the concave deformation is not particularly limited, and depends on the vertical length of the expanded lattice body, but is approximately 1 to 3% of the vertical length, and the vertical length of the lattice body is 100 mm. If it is, it can be set to 1-3 mm.
<リブ>
本発明にて述べるリブは、電槽の内側底面に設けられるものであり、その数は単数でも複数でも良いが、このリブに先に述べたエキスパンド格子体を使用した極板を配置することから、複数とすることが好ましい。これは、前記極板を、安定して載置できることによる。
また、リブは、1つの材質により形成しても、リブ本体とこのリブ本体に固定される軟質で弾力性を有する材料とを有する構成としても良い。但し、1つの材質にて形成する場合は、電槽底面とリブとの材質を代える必要があり、リブ本体と軟質で弾力性を有する材料とを有する場合は、電槽とリブ本体とを同じ材質にできるが、後に軟質で弾力性を有する材料をリブ上に固定する必要がある。
<Rib>
The rib described in the present invention is provided on the inner bottom surface of the battery case, and the number thereof may be singular or plural, but the electrode plate using the expanded lattice described above is disposed on this rib. It is preferable to use a plurality. This is because the electrode plate can be placed stably.
The rib may be formed of a single material, or may have a structure including a rib main body and a soft and elastic material fixed to the rib main body. However, when forming with one material, it is necessary to change the material of the battery case bottom and the rib. When the rib main body and the soft and elastic material are used, the battery case and the rib main body are the same. Although it can be made of a material, it is necessary to later fix a soft and elastic material on the rib.
リブの材質は、軟質で弾力性を有する材料を用いないのであれば、電槽よりも軟質であり、耳部を変形させるに足る応力よりも小さい応力で凹変形する、軟質のポリエチレン等を用いることができる。
軟質で弾力性を有する材料を用いる場合は、リブ本体として、先に述べた電槽と同様のポリプロピレン、ポリエチレン、ABS等を用いることができる。特にポリプロピレンであると、耐酸性、加工性、コストの面で好ましい。
また、軟質で弾力性を有する材料は、ブチルゴム又はエチレンプロピレンゴム等を用いることができ、特にエチレンプロピレンゴムを用いることが、応力を吸収しやすく好ましい。
If the material of the rib is not soft and elastic, soft polyethylene or the like is used which is softer than the battery case and is concavely deformed with a stress smaller than enough to deform the ear portion. be able to.
When a soft and elastic material is used, polypropylene, polyethylene, ABS, or the like similar to the battery case described above can be used as the rib body. In particular, polypropylene is preferable in terms of acid resistance, processability, and cost.
As the soft and elastic material, butyl rubber or ethylene propylene rubber can be used. In particular, it is preferable to use ethylene propylene rubber because it easily absorbs stress.
リブ本体への軟質で弾力性を有する材料の固定は、特に限定されるものではないが、リブ本体の上面に凸部を設け、軟質で弾力性を有する材料の底面(リブ本体と接する面)に、リブ本体の凸部に嵌合する凹部を設けて、凸部と凹部とを嵌合させることにより、行うことができる。尚、凸部と凹部は、これを設けるリブ本体と軟質で弾力性を有する材料とを逆にすることもできる。すなわち、リブ本体の上面に凹部を設け、軟質で弾力性を有する材料に凸部を設けることができる。また、凸部と凹部とを単純に嵌合するばかりでなく、接着剤を用いて固着することもできる。
更に、接着剤は、必ずしも使用する必要はない。軟質で弾力性を有する材料は、これに載置される極板の底辺によりリブ本体に押しつけられ、脱落することはない。
The fixing of the soft and elastic material to the rib main body is not particularly limited, but a convex portion is provided on the upper surface of the rib main body, and the bottom surface of the soft and elastic material (the surface in contact with the rib main body) It can carry out by providing the recessed part fitted to the convex part of a rib main body, and making a convex part and a recessed part fit. In addition, a convex part and a recessed part can also reverse the rib main body which provides this, and the material which has soft elasticity. That is, a concave portion can be provided on the upper surface of the rib main body, and the convex portion can be provided on a soft and elastic material. Moreover, not only can a convex part and a recessed part fit simply, but it can also adhere using an adhesive agent.
Furthermore, it is not always necessary to use an adhesive. The soft and elastic material is pressed against the rib main body by the bottom side of the electrode plate placed thereon and does not fall off.
以下図面を参照して、本発明の実施例を説明する。
<エキスパンド格子体を使用した極板>
(正極板の作製)
鉛−カルシウム−スズ合金からなる、厚さ:1.0mm、幅:78mmの長尺の圧延シートを作製する。次に、圧延シートの幅方向中央部を除く左右両側領域に圧延シート長手方向のスリットを入れ、圧延シートの幅方向に展開加工(エキスパンド加工)を行い、これを所定寸法に裁断すると共に、圧延シートの非展開部から所定の形状に打ち抜き加工をして、図7のエキスパンド格子体21を作製する。図7に示すように、エキスパンド格子体21は、展開部22、上枠骨23、下枠骨24、前記打ち抜き加工により形成された耳部25から構成される。前述のように、エキスパンド格子体21には、左右両端に枠骨がない。
次に、酸化鉛を主成分とする鉛粉に水と希硫酸を加えて混練して、正極用ペースト状活物質を作製する。このペースト状活物質を前記エキスパンド格子体21の展開部22に充填し、熟成、乾燥を経て、正極板1を作製する。
(負極板の作製)
負極板については、正極板と同様の工程にて、エキスパンド格子体を作製する。
次に、酸化鉛を主成分とする鉛粉に、添加剤(リグニン、硫酸バリウム、カーボン)を加えて混合し、続いて水と希硫酸を加えて混練して、負極用ペースト状活物質を作製する。このペースト状活物質を前記エキスパンド格子体の展開部に充填し、熟成、乾燥を経て、負極板2を作製する。
Embodiments of the present invention will be described below with reference to the drawings.
<Plate using expanded grid>
(Preparation of positive electrode plate)
A long rolled sheet made of a lead-calcium-tin alloy and having a thickness of 1.0 mm and a width of 78 mm is produced. Next, slits in the longitudinal direction of the rolled sheet are provided in both the left and right regions excluding the central portion in the width direction of the rolled sheet, and the unfolding process (expanding process) is performed in the width direction of the rolled sheet. The expanded lattice body 21 of FIG. 7 is produced by punching into a predetermined shape from the non-deployed portion of the sheet. As shown in FIG. 7, the expanded lattice body 21 includes a deployment portion 22, an upper frame bone 23, a lower frame bone 24, and ear portions 25 formed by the punching process. As described above, the expanded lattice body 21 has no frame bones at the left and right ends.
Next, water and dilute sulfuric acid are added to and kneaded with lead powder containing lead oxide as a main component to produce a paste active material for a positive electrode. This paste-like active material is filled in the expanded portion 22 of the expanded lattice 21, and the positive electrode plate 1 is produced through aging and drying.
(Preparation of negative electrode plate)
For the negative electrode plate, an expanded lattice is produced in the same process as the positive electrode plate.
Next, an additive (lignin, barium sulfate, carbon) is added to and mixed with lead powder mainly composed of lead oxide, and then water and dilute sulfuric acid are added and kneaded to obtain a paste active material for a negative electrode. Make it. This pasty active material is filled in the expanded portion of the expanded lattice body, and after aging and drying, the negative electrode plate 2 is produced.
(極板群の作製)
前記負極板2を、袋状に加工したポリエチレン製セパレータ3に挿入し、前記正極板1と交互に組み合わせて、図1に示すような極板群4を作製する。極板群4は正極板1が6枚、負極板2が7枚で構成され、極板群の積層方向両端が負極板2となる。なお、図1は極板群4を側面から見ているが、耳部25は図示を省略した。
(Production of electrode group)
The negative electrode plate 2 is inserted into a polyethylene separator 3 processed into a bag shape, and alternately combined with the positive electrode plate 1 to produce an electrode plate group 4 as shown in FIG. The electrode plate group 4 is composed of six positive electrode plates 1 and seven negative electrode plates 2, and both ends of the electrode plate group in the stacking direction are the negative electrode plates 2. In addition, although FIG. 1 has seen the electrode group 4 from the side surface, the ear | edge part 25 was abbreviate | omitting illustration.
<実施例1>
(電槽の作製)
電槽材料はポリプロピレンを用い、射出成形機を用いて図2に示すような電槽5を作製する。外寸は、長さ:230mm、幅:170mm、高さ:200mmであり、電槽内部は隔壁6により6分割されている。電槽5の底面には、各隔壁にて区画された部位毎に、図3に示すような、2本のエチレンプロピレンゴム製のリブ8を配置する。リブ8は、台座7の上面に射出成形により一体成形されたものであり、台座7は電槽5に対し接着されることなく、配置される。
リブ8の高さは、台座7と合わせて8mmとし、極板群4の底面を、電槽底面から8mmだけ、上に持ち上げる。
<Example 1>
(Production of battery case)
The battery case material is polypropylene, and the battery case 5 as shown in FIG. 2 is produced using an injection molding machine. The outer dimensions are length: 230 mm, width: 170 mm, height: 200 mm, and the inside of the battery case is divided into six by partition walls 6. On the bottom surface of the battery case 5, two ribs 8 made of ethylene propylene rubber as shown in FIG. 3 are arranged for each portion partitioned by each partition wall. The rib 8 is integrally formed on the upper surface of the pedestal 7 by injection molding, and the pedestal 7 is arranged without being bonded to the battery case 5.
The height of the rib 8 is set to 8 mm together with the base 7, and the bottom surface of the electrode plate group 4 is lifted upward by 8 mm from the bottom surface of the battery case.
(鉛蓄電池の作製)
前述した極板群4は電圧:2Vであり、極板群を6個直列に配置することにより電圧:12Vの鉛蓄電池を構成する。
前述した極板群4の正極板1、負極板2の耳部25は、それぞれキャストオンストラップ(COS)方式で、図4に示すように、ストラップ9を形成させて接続する。また、前述した電槽5には、極板群4のストラップ9位置に対応する隔壁箇所に孔を開けておく。電槽5に極板群4を6個挿入し、ストラップ9同士を抵抗溶接する。
その後、図5に示すように、電槽5と同じくポリプロピレンを材料に用い、射出成形により作製された蓋10と、電槽5とを熱溶着する。蓋10には、注液口11が配置されており、比重:1.230(20℃換算)の希硫酸を注入して、直流電流を所定時間通電し、電槽化成して、鉛蓄電池を作製した。
(Production of lead-acid battery)
The electrode plate group 4 described above has a voltage of 2 V, and a lead storage battery with a voltage of 12 V is configured by arranging six electrode plate groups in series.
The positive electrode plate 1 of the electrode plate group 4 and the ear portion 25 of the negative electrode plate 2 are each connected by forming a strap 9 as shown in FIG. 4 by a cast-on-strap (COS) method. Further, the battery case 5 described above is perforated at a partition wall portion corresponding to the strap 9 position of the electrode plate group 4. Six electrode plate groups 4 are inserted into the battery case 5, and the straps 9 are resistance-welded.
Thereafter, as shown in FIG. 5, the lid 10 made by injection molding and the battery case 5 are heat-welded using polypropylene as a material in the same manner as the battery case 5. The lid 10 is provided with a liquid inlet 11, injected with dilute sulfuric acid having a specific gravity of 1.230 (converted to 20 ° C.), energized with a direct current for a predetermined time, formed into a battery case, and a lead storage battery. Produced.
完成した鉛蓄電池を、図5のA−A断面(図2の隔壁6の近傍)で切断した断面図を図6に示す。図6に示すように、リブ8により、極板群4が電槽5の内部底面から浮かせて保持されており、極板群4の底面は、リブ8にのみ接触するようになっている。 FIG. 6 shows a cross-sectional view of the completed lead storage battery taken along the line AA in FIG. 5 (in the vicinity of the partition wall 6 in FIG. 2). As shown in FIG. 6, the electrode plate group 4 is held by the rib 8 so as to float from the inner bottom surface of the battery case 5, and the bottom surface of the electrode plate group 4 is in contact with only the rib 8.
<比較例1>
(電槽の作製)
電槽内部底面のリブを設けず、電槽高さを190mmとした以外は、実施例1にて述べた電槽と同じ物を作製した。
(鉛蓄電池の作製)
比較例1の鉛蓄電池は、前述した底面にリブを有さない電槽を用いた以外は、実施例1と同様にして鉛蓄電池を作製した。即ち、実施例1と比較例1は同じ電極群を用いる。
<Comparative Example 1>
(Production of battery case)
The same thing as the battery case described in Example 1 was produced except that the rib on the inner bottom surface of the battery case was not provided and the height of the battery case was 190 mm.
(Production of lead-acid battery)
A lead storage battery of Comparative Example 1 was produced in the same manner as in Example 1 except that the battery case without ribs was used on the bottom surface. That is, Example 1 and Comparative Example 1 use the same electrode group.
(評価)
実施例1、比較例1の電池を用いて、これを75℃の水槽内に静置し、放電電流:25Aにて1分間の放電を行い、その後、14.8V、制限電流:25Aの定電圧充電を10分間行うことを1サイクルとし、これを連続で610サイクル行い、56時間放置する。放置後、放電電流:520Aにて30秒間放電を行い、30秒目の電圧が、7.2V未満であれば試験を終了し、7.2V以上であれば、同様の試験を繰り返し続行する。
その結果、比較例1では、8540回にて耳部の付け根が折れて、寿命に達した。
実施例1では、リブが耳部に掛かる応力を変形吸収することにより、耳部の付け根が折れることはない。しかし、充放電を繰り返すことで正極板のエキスパンド格子体が腐食し、体積膨張により格子体が伸びる。耳部はストラップで固定されその近傍は伸びを抑えられているので、上枠骨の耳部から遠い両端側が上方に反るように変形して、対向する負極板の耳部に接触し、正極板と負極板の短絡により、9760回にて寿命に達した。
即ち、本発明では、耳部の根元にかかる応力を軽減することができ、寿命を延ばすことができる。
(Evaluation)
Using the battery of Example 1 and Comparative Example 1, this was left in a 75 ° C. water tank, discharged at a discharge current of 25 A for 1 minute, and then 14.8 V and a limited current of 25 A. Performing voltage charging for 10 minutes is one cycle, and this is continuously performed for 610 cycles and left for 56 hours. After leaving, discharge is performed at a discharge current of 520 A for 30 seconds. If the voltage at 30 seconds is less than 7.2 V, the test is terminated. If the voltage is 7.2 V or more, the same test is repeated.
As a result, in Comparative Example 1, the base of the ear part was broken at 8540 times, and the life was reached.
In Example 1, the ribs deform and absorb the stress applied to the ears, so that the roots of the ears are not broken. However, by repeating charging and discharging, the expanded lattice of the positive electrode plate is corroded, and the lattice is expanded by volume expansion. Since the ear is fixed with a strap and the vicinity thereof is restrained from stretching, it deforms so that both end sides far from the ear of the upper frame bone warp upward, and comes into contact with the ear of the opposing negative electrode plate. The life reached 9760 times due to a short circuit between the plate and the negative electrode plate.
That is, in the present invention, the stress applied to the base of the ear can be reduced, and the life can be extended.
1…正極板、2…負極板、3…セパレータ、4…極板群、5…電槽、6…隔壁、7…台座、8…リブ、9…ストラップ、10…蓋、11…注液口。 DESCRIPTION OF SYMBOLS 1 ... Positive electrode plate, 2 ... Negative electrode plate, 3 ... Separator, 4 ... Electrode board group, 5 ... Battery case, 6 ... Bulkhead, 7 ... Base, 8 ... Rib, 9 ... Strap, 10 ... Cover, 11 ... Injection hole .
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011045522A JP2012182080A (en) | 2011-03-02 | 2011-03-02 | Lead acid battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011045522A JP2012182080A (en) | 2011-03-02 | 2011-03-02 | Lead acid battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2012182080A true JP2012182080A (en) | 2012-09-20 |
Family
ID=47013101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011045522A Pending JP2012182080A (en) | 2011-03-02 | 2011-03-02 | Lead acid battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2012182080A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014134253A (en) * | 2013-01-10 | 2014-07-24 | Panasonic Corp | Heat insulation panel |
JP2019067522A (en) * | 2017-09-28 | 2019-04-25 | 古河電池株式会社 | Method of manufacturing positive electrode lattice body for lead storage battery, positive electrode lattice body for storage battery, and lead storage battery |
WO2022102013A1 (en) * | 2020-11-11 | 2022-05-19 | 昭和電工マテリアルズ株式会社 | Separator for batteries, electrode, lead acid stroage battery, battery pack and electric automobile |
CN117219983A (en) * | 2023-11-07 | 2023-12-12 | 远山建安技术有限公司 | Wind-solar complementary power generation integrated device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5697872U (en) * | 1979-12-27 | 1981-08-03 | ||
JPS5697873U (en) * | 1979-12-27 | 1981-08-03 | ||
JPS57124867A (en) * | 1981-01-28 | 1982-08-03 | Matsushita Electric Ind Co Ltd | Lead storage battery |
JPS5939867U (en) * | 1982-09-08 | 1984-03-14 | 株式会社ユアサコーポレーション | lead acid battery |
JPS6017853A (en) * | 1983-07-08 | 1985-01-29 | Matsushita Electric Ind Co Ltd | Jar for storage battery |
JPH01130261U (en) * | 1988-02-29 | 1989-09-05 | ||
JPH0744596U (en) * | 1991-11-22 | 1995-11-21 | 古河電池株式会社 | Lead acid battery |
JPH11329373A (en) * | 1998-05-12 | 1999-11-30 | Furukawa Battery Co Ltd:The | Sealed lead-acid storage battery |
JP2001351671A (en) * | 2000-06-09 | 2001-12-21 | Furukawa Battery Co Ltd:The | Lead storage battery |
-
2011
- 2011-03-02 JP JP2011045522A patent/JP2012182080A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5697872U (en) * | 1979-12-27 | 1981-08-03 | ||
JPS5697873U (en) * | 1979-12-27 | 1981-08-03 | ||
JPS57124867A (en) * | 1981-01-28 | 1982-08-03 | Matsushita Electric Ind Co Ltd | Lead storage battery |
JPS5939867U (en) * | 1982-09-08 | 1984-03-14 | 株式会社ユアサコーポレーション | lead acid battery |
JPS6017853A (en) * | 1983-07-08 | 1985-01-29 | Matsushita Electric Ind Co Ltd | Jar for storage battery |
JPH01130261U (en) * | 1988-02-29 | 1989-09-05 | ||
JPH0744596U (en) * | 1991-11-22 | 1995-11-21 | 古河電池株式会社 | Lead acid battery |
JPH11329373A (en) * | 1998-05-12 | 1999-11-30 | Furukawa Battery Co Ltd:The | Sealed lead-acid storage battery |
JP2001351671A (en) * | 2000-06-09 | 2001-12-21 | Furukawa Battery Co Ltd:The | Lead storage battery |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014134253A (en) * | 2013-01-10 | 2014-07-24 | Panasonic Corp | Heat insulation panel |
JP2019067522A (en) * | 2017-09-28 | 2019-04-25 | 古河電池株式会社 | Method of manufacturing positive electrode lattice body for lead storage battery, positive electrode lattice body for storage battery, and lead storage battery |
WO2022102013A1 (en) * | 2020-11-11 | 2022-05-19 | 昭和電工マテリアルズ株式会社 | Separator for batteries, electrode, lead acid stroage battery, battery pack and electric automobile |
CN117219983A (en) * | 2023-11-07 | 2023-12-12 | 远山建安技术有限公司 | Wind-solar complementary power generation integrated device |
CN117219983B (en) * | 2023-11-07 | 2024-01-26 | 远山建安技术有限公司 | Wind-solar complementary power generation integrated device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6665465B2 (en) | Lead storage battery | |
KR20130094194A (en) | Battery, battery plate assembly, and method of assembly | |
JP6168163B2 (en) | Lead acid battery | |
JP4752365B2 (en) | Lead acid battery | |
JP2012182080A (en) | Lead acid battery | |
JP2011060556A (en) | Battery pack | |
JP2011204405A (en) | Nonaqueous electrolyte secondary battery and method for manufacturing the same | |
JP5150012B1 (en) | Lead acid battery | |
JP6398111B2 (en) | Lead acid battery | |
JP6198046B2 (en) | Liquid lead-acid battery | |
JP6653070B2 (en) | Control valve type lead storage battery and its battery case | |
JP6244801B2 (en) | Lead acid battery | |
JP2012079609A (en) | Lead storage battery | |
JP6572711B2 (en) | Lead acid battery | |
JP6921037B2 (en) | Lead-acid battery | |
JP2020123447A (en) | Lead-acid battery | |
JP2017069022A (en) | Lead storage battery | |
JP7105218B2 (en) | lead acid battery | |
JPWO2018030471A1 (en) | Case for assembled battery, lead storage battery, assembled battery, storage battery system, method for improving heat dissipation of case for assembled battery, and method for improving deformation resistance of case for assembled battery | |
JP6999430B2 (en) | Lead-acid battery | |
JP2009289595A (en) | Sealed lead acid storage battery | |
JP6472668B2 (en) | Lead acid battery | |
JP2023020656A (en) | Liquid type lead storage battery and manufacturing method of them | |
JP6006429B2 (en) | Lead acid battery | |
JP2006066252A (en) | Lead-acid storage battery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130925 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140314 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140401 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140902 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20150105 |